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Smart Med Learn Dr. Ankit Jain
India
Приєднався 28 сер 2013
In this channel I creat lectures for medical students. Lectures contain the basic concepts of medical topics. All the lectures are very useful for medical students and also covers the MCQs asked in various competative exams.
Circle of Willis /Anatomy / Simplified- Blood supply to brain / Circulus Arteriosus
@Smart Med Learn Dr. Ankit Jain #circleofwillis #anatomyofcircleofwillis #circulusarteriosus #circleofwillisanatomy #neuroanatomy #anatomy #marrow #usmlestep1 #smartmedlearn
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like , comment , share , subscribe
To Subscribe our youtube channel, click here -
ua-cam.com/users/SmartMedLearnDrAnkitJain
Telegram group Anatomy knowledge (Smart Med Learn) link:
t.me/smartmedlearnsdrankitjain
Facebook page :
smartmedlearn
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To watch more videos, please click here:-
Playlist :- Head and neck anatomy
ua-cam.com/play/PLgm-EBMsvJ4YdGtGIluMfE_T0R-7NKI6o.html
Playlist :- Lower limb anatomy
ua-cam.com/play/PLgm-EBMsvJ4bevgOR7xGjCmmRdHlnGjcV.html
Playlist :- Upper limb anatomy
ua-cam.com/play/PLgm-EBMsvJ4ZEYsqFBgtUH7qrN4UGDDsj.html
Playlist :- Thorax anatomy
ua-cam.com/play/PLgm-EBMsvJ4bXeiapbrYEF7B9BYQMV6uf.html
Playlist :- Neuroanatomy
ua-cam.com/play/PLgm-EBMsvJ4bPcrzq0sNggQ9cF3uGew7T.html
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Circle of Willis
- Pair of vertebral artery; enter the skull through foramen magnum. They run upward on the anterolateral aspect of the medulla and merge with each other, at the lower border of the pons to form basilar artery.
- Basilar artery runs upward in the midline on the anterior surface of the pons and reaches its upper border. Here basilar artery terminates by divide into right and left posterior cerebral artery.
- Spinal branch arises from each vertebral artery at the upper part of the medulla. These spinal branches join with each other to form a single anterior spinal artery, which runs downward along the anterior median longitudinal fissure of the spinal cord. Anterior spinal artery supplies the central part of the medulla and anterior 2/3rd of the spinal cord.
- Near the lower end of olive, Posterior inferior cerebellar artery arises from the vertebral artery that wind around the medulla and supply the dorsolateral part of the medulla and cerebellum.
- Posterior spinal artery arises from the posterior inferior cerebellar artery. The two posterior spinal arteries together supply the posterior 1/3rd of the spinal cord.
- Several small meningeal and medullary branches arise from the cranial part of the vertebral artery. Meningeal branches supply the durameter of posterior cranial fossa, while the medullary branches supply the medulla.
- Anterior inferior cerebellar artery arises close to the lower border of the pons. It runs backward and supplies the anterolateral portion of the inferior surface of the cerebellum.
- Labyrinthine artery after arising from the basilar artery runs alongwith 8th cranial nerve and enters the internal acoustic meatus to supply the internal ear.
- Close to superior border of pons, superior cerebellar artery coming out from the basilar artery. It supplies the superior surface of the cerebellum.
- Numerous short slender pontine branches emerge from the basilar artery, which pierce the pons and supply it.
- Apart from vertebral artery, another major artery which supplies the brain is ICA. ICA enters the skull through carotid canal and after traverse a short course, it finally comes to lie lateral to the optic chaisma. Here, ICA terminates by dividing into larger middle cerebral artery and smaller anterior cerebral artery.
- Anterior cerebral artery runs forward and medially above the optic nerve and comes very close to its fellow. Right and left anterior cerebral artery gets connected with each other with a short transverse anterior communicating artery.
- Posterior communicating artery arises from ICA close to its termination. It runs backward and connects the ICA with the posterior cerebral artery.
- Around the interpeduncular fossa, a hexagonal arterial circle at the base of the brain, is known as Circle of willis or circulus arteriosus.
- Obviously, branches of vertebral artery and ICA take part in the formation of circle of willis.
- Circle of willis is formed, anteriorly by the anterior communicating artery. Anteriolaterally, it is formed by the anterior cerebral artery. Posterolaterlly, it is formed by the posterior communicating artery and posteriorly it is formed by the posterior cerebral artery.
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Thank you
Smart Med Learn
Dr. Ankit Jain
MBBS, MS
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like , comment , share , subscribe
To Subscribe our youtube channel, click here -
ua-cam.com/users/SmartMedLearnDrAnkitJain
Telegram group Anatomy knowledge (Smart Med Learn) link:
t.me/smartmedlearnsdrankitjain
Facebook page :
smartmedlearn
-----------x-----------
To watch more videos, please click here:-
Playlist :- Head and neck anatomy
ua-cam.com/play/PLgm-EBMsvJ4YdGtGIluMfE_T0R-7NKI6o.html
Playlist :- Lower limb anatomy
ua-cam.com/play/PLgm-EBMsvJ4bevgOR7xGjCmmRdHlnGjcV.html
Playlist :- Upper limb anatomy
ua-cam.com/play/PLgm-EBMsvJ4ZEYsqFBgtUH7qrN4UGDDsj.html
Playlist :- Thorax anatomy
ua-cam.com/play/PLgm-EBMsvJ4bXeiapbrYEF7B9BYQMV6uf.html
Playlist :- Neuroanatomy
ua-cam.com/play/PLgm-EBMsvJ4bPcrzq0sNggQ9cF3uGew7T.html
------------x------------
Circle of Willis
- Pair of vertebral artery; enter the skull through foramen magnum. They run upward on the anterolateral aspect of the medulla and merge with each other, at the lower border of the pons to form basilar artery.
- Basilar artery runs upward in the midline on the anterior surface of the pons and reaches its upper border. Here basilar artery terminates by divide into right and left posterior cerebral artery.
- Spinal branch arises from each vertebral artery at the upper part of the medulla. These spinal branches join with each other to form a single anterior spinal artery, which runs downward along the anterior median longitudinal fissure of the spinal cord. Anterior spinal artery supplies the central part of the medulla and anterior 2/3rd of the spinal cord.
- Near the lower end of olive, Posterior inferior cerebellar artery arises from the vertebral artery that wind around the medulla and supply the dorsolateral part of the medulla and cerebellum.
- Posterior spinal artery arises from the posterior inferior cerebellar artery. The two posterior spinal arteries together supply the posterior 1/3rd of the spinal cord.
- Several small meningeal and medullary branches arise from the cranial part of the vertebral artery. Meningeal branches supply the durameter of posterior cranial fossa, while the medullary branches supply the medulla.
- Anterior inferior cerebellar artery arises close to the lower border of the pons. It runs backward and supplies the anterolateral portion of the inferior surface of the cerebellum.
- Labyrinthine artery after arising from the basilar artery runs alongwith 8th cranial nerve and enters the internal acoustic meatus to supply the internal ear.
- Close to superior border of pons, superior cerebellar artery coming out from the basilar artery. It supplies the superior surface of the cerebellum.
- Numerous short slender pontine branches emerge from the basilar artery, which pierce the pons and supply it.
- Apart from vertebral artery, another major artery which supplies the brain is ICA. ICA enters the skull through carotid canal and after traverse a short course, it finally comes to lie lateral to the optic chaisma. Here, ICA terminates by dividing into larger middle cerebral artery and smaller anterior cerebral artery.
- Anterior cerebral artery runs forward and medially above the optic nerve and comes very close to its fellow. Right and left anterior cerebral artery gets connected with each other with a short transverse anterior communicating artery.
- Posterior communicating artery arises from ICA close to its termination. It runs backward and connects the ICA with the posterior cerebral artery.
- Around the interpeduncular fossa, a hexagonal arterial circle at the base of the brain, is known as Circle of willis or circulus arteriosus.
- Obviously, branches of vertebral artery and ICA take part in the formation of circle of willis.
- Circle of willis is formed, anteriorly by the anterior communicating artery. Anteriolaterally, it is formed by the anterior cerebral artery. Posterolaterlly, it is formed by the posterior communicating artery and posteriorly it is formed by the posterior cerebral artery.
-------x----------
Thank you
Smart Med Learn
Dr. Ankit Jain
MBBS, MS
Переглядів: 1 138
Відео
Portal vein / Anatomy / Simplified - Formation, Relations and Tributaries
Переглядів 15 тис.2 роки тому
@Smart Med Learn Dr. Ankit Jain #portalvein #anatomyofportalvein #portalveintributaries #portalveinanatomy #portalveinrelatins #tributariesofportalvein #anatomy #usmlestep1 #smartmedlearn x like , comment , share , subscribe To Subscribe our youtube channel, click here - ua-cam.com/users/SmartMedLearnDrAnkitJain Telegram group Anatomy knowledge (Smart Med Learn) link: t.me/smartmedle...
Nasal Septum / Medial Wall of Nasal Cavity/ Anatomy - Bones, Cartilages, Blood supply & Nerve Supply
Переглядів 28 тис.3 роки тому
#nasalseptum #medialwallofnasalcavity #nasalseptumanatomy #bloodsupplyofnasalseptum #anatomy #smartmedlearn #usmlestep1 #arterialsupplyofnasalseptum x like , comment , share , subscribe To Subscribe our youtube channel, click here - ua-cam.com/users/SmartMedLearnDrAnkitJain Telegram group link: Anatomy knowledge (Smart Med Learn) t.me/smartmedlearndrankitjain Facebook page : smartm...
Glossopharyngeal Nerve / Anatomy / Cranial Nerve IX / XI Cranial nerve / Functional components
Переглядів 4,3 тис.3 роки тому
#cranialnerve #glossopharyngealnerve #ninthcranialnerve #neurology #anatomyanimations #anatomy #smartmedlearn #usmlestep1 x like , comment , share , subscribe To Subscribe our youtube channel, click here - ua-cam.com/users/SmartMedLearnDrAnkitJain Telegram group link: Anatomy knowledge (Smart Med Learn) t.me/smartmedlearndrankitjain Facebook page : smartmedlearn x To watch more vid...
Coronary Arteries/Anatomy/Blood supply of heart/Arterial supply of heart/Right Left Coronary Artery
Переглядів 44 тис.3 роки тому
#BloodsupplyofHeart #coronaryarteries #coronarycirculation #arterialsupplyofheart #heartarterialsupply #heartbloodsupply #anatomyofcoronaryarteries #coronarybloodsupply #coronaryarterialsupply #anatomyanimations #anatomy #usmleanatomy #coronaryarteriesanatomy #smartmedlearn x like , comment , share , subscribe To Subscribe our youtube channel, click here - ua-cam.com/users/SmartMedLearnDrAnkitJ...
Arches of foot (Part - 2)/ Lateral Longitudinal Arch/ Anatomy - Structures & Maintenance Factors
Переглядів 6 тис.3 роки тому
#archesoffoot #mediallongitudinalarch #laterallongitudinalarch #mbbs #anatomy #lowerlimbanatomy #smartmedlearn x Links of other parts of arches of foot videos: Arches of foot (Part-1)/Medial Longitudinal Arch/Anatomy -Structures & Maintenance Factors ua-cam.com/video/Ppjy8rWG_Kk/v-deo.html x like , comment , share , subscribe To Subscribe our youtube channel, click here - ua-cam.com/users/Smart...
Femoral artery/ Anatomy - Origin, Course, Relations and Branches / Profunda femoris artery
Переглядів 3,5 тис.3 роки тому
#anatomyoffemoralartery #femoralartery #femoralarteryanatomy #femoralarterybranches #femoralarterycourse #femoralarteryorigin #femoralarterylecture #femoralarterylowerlimb #usmleanatomy #mbbsanatomy #anatomy #smartmedlearn x like , comment , share , subscribe To Subscribe our youtube channel, click here - ua-cam.com/users/SmartMedLearnDrAnkitJain Telegram group Anatomy knowledge (Smar...
Otic ganglion /Anatomy/ Secretomotor (parasympathetic and sympathetic) pathway of parotid gland
Переглядів 27 тис.3 роки тому
@SmartMedLearnDrAnkitJain #oticganglion #anatomyofoticganglion #oticganglionbranches #oticganglionanatomy #octicganglionfunction #anatomy #usmlestep1 #smartmedlearn x like , comment , share , subscribe To Subscribe our youtube channel, click here - ua-cam.com/users/SmartMedLearnDrAnkitJain Telegram group Anatomy knowledge (Smart Med Learn) link: t.me/smartmedlearnsdrankitjain Faceboo...
Femoral triangle / Anatomy / Simplified - Boundaries, Contents and Clinical Anatomy
Переглядів 22 тис.3 роки тому
#femoraltriangle #femoralcanal #femoralsheath #lowerlimbanatomy #anatomy #usmleanatomy #anatomyvideos #anatomyanimations #anatomylectures #mbbsanatomy #anatomy #smartmedlearn x like , comment , share , subscribe To Subscribe our youtube channel, click here - ua-cam.com/users/SmartMedLearnDrAnkitJain Telegram group Anatomy knowledge (Smart Med Learn) link: t.me/smartmedlearnsdrankitjain Facebook...
Adductor canal (Subsartorial / Hunter's canal)/ Anatomy/ Simplified- Features, Boundaries & Contents
Переглядів 19 тис.3 роки тому
#adductorcanal #subsartorialcanal #huntercanal #anatomy #lowerlimbanatomy #smartmedlearn #firstmbbsstudents x like , comment , share , subscribe To Subscribe our youtube channel, click here - ua-cam.com/users/SmartMedLearnDrAnkitJain Telegram group Anatomy knowledge (Smart Med Learn) link: t.me/smartmedlearnsdrankitjain Facebook page : smartmedlearn x To watch more videos, please c...
Arches of foot (Part-1)/Medial Longitudinal Arch/Anatomy -Structures & Maintenance Factors
Переглядів 15 тис.3 роки тому
#archesoffoot #mediallongitudinalarch #mbbs #anatomy #lowerlimbanatomy #smartmedlearn #firstmbbsstudents x Links of other parts of arches of foot videos: Arches of foot (Part - 2)/ Lateral Longitudinal Arch/ Anatomy - Structures & Maintenance Factors ua-cam.com/video/nRDRXB_f0Zo/v-deo.html x like , comment , share , subscribe To Subscribe our youtube channel, click here - ua-cam.com/users/Smart...
Popliteal fossa / Anatomy / Simplified / - Boundaries and Contents /Animated
Переглядів 8 тис.3 роки тому
#poplitealfossa #anatomyofpoplitealfossa #poplitealfossaanatomy #anatomy #smartmedlearn #usmle #poplitealfossaanimatedvideo like , comment , share , subscribe To Subscribe our youtube channel, click here - ua-cam.com/users/SmartMedLearnDrAnkitJain Telegram group Anatomy knowledge (Smart Med Learn) link: t.me/smartmedlearnsdrankitjain Facebook page : smartmedlearn Popliteal fossa Th...
Carotid triangle of neck/ Anatomy /Simplified - Boundaries & contents/Anterior triangle of neck
Переглядів 13 тис.3 роки тому
Links of other neck triangles videos: Triangles of neck- Subdivisions & Boundaries/ Anterior and posterior triangle ua-cam.com/video/6DAQp7h38Go/v-deo.html Submental triangle of neck/ Anatomy/ Simplified - Boundaries and contents ua-cam.com/video/kPr7qdl18mo/v-deo.html Digastric (Submandibular) triangle of neck- Boundaries & contents ua-cam.com/video/fgQqHwemW4U/v-deo.html Posterior triangle of...
Posterior triangle of neck/ Anatomy/ Simplified - Boundaries, Contents & Clinical Anatomy
Переглядів 27 тис.3 роки тому
Links of other neck triangles videos: Triangles of neck- Subdivisions & Boundaries/ Anterior and posterior triangle ua-cam.com/video/6DAQp7h38Go/v-deo.html Submental triangle of neck/ Anatomy/ Simplified - Boundaries and contents/ Anterior triangle of neck ua-cam.com/video/kPr7qdl18mo/v-deo.html Digastric (Submandibular) triangle of neck - Boundaries & contents ua-cam.com/video/fgQqHwemW4U/v-de...
Digastric (Submandibular) triangle of neck/ Anatomy- Boundaries & contents/Anterior triangle of neck
Переглядів 21 тис.3 роки тому
Digastric (Submandibular) triangle of neck/ Anatomy- Boundaries & contents/Anterior triangle of neck
Submental triangle of neck/ Anatomy/ Simplified - Boundaries and contents/ Anterior triangle of neck
Переглядів 8 тис.3 роки тому
Submental triangle of neck/ Anatomy/ Simplified - Boundaries and contents/ Anterior triangle of neck
Triangles of neck/ Anatomy/ Simplified - Subdivisions & Boundaries/ Anterior and posterior triangle
Переглядів 11 тис.3 роки тому
Triangles of neck/ Anatomy/ Simplified - Subdivisions & Boundaries/ Anterior and posterior triangle
UInar nerve/Anatomy/Simplified - Course, relations & branches/ Guyon's canal Cubital Tunnel/in hindi
Переглядів 3,6 тис.3 роки тому
UInar nerve/Anatomy/Simplified - Course, relations & branches/ Guyon's canal Cubital Tunnel/in hindi
Erb's paralysis/Brachial Plexus Injury/Erb's Palsy/Simplified Anatomy- Deformity Disability/in hindi
Переглядів 18 тис.3 роки тому
Erb's paralysis/Brachial Plexus Injury/Erb's Palsy/Simplified Anatomy- Deformity Disability/in hindi
Brachial plexus / Anatomy / Simplified - Roots, Trunks, Divisions, Cords and Branches/ in hindi
Переглядів 33 тис.3 роки тому
Brachial plexus / Anatomy / Simplified - Roots, Trunks, Divisions, Cords and Branches/ in hindi
Cubital fossa / Anatomy/Simplified - Boundaries, contents, and clinical anatomy/ in hindi
Переглядів 7 тис.4 роки тому
Cubital fossa / Anatomy/Simplified - Boundaries, contents, and clinical anatomy/ in hindi
Light reflex pathway and lesions (Part-1/2) in Hindi // pupillary light reflex pathway and lesions
Переглядів 17 тис.4 роки тому
Light reflex pathway and lesions (Part-1/2) in Hindi // pupillary light reflex pathway and lesions
Light reflex pathway and lesions (Part-2/2) in Hindi // pupillary light reflex pathway and lesions
Переглядів 5 тис.4 роки тому
Light reflex pathway and lesions (Part-2/2) in Hindi // pupillary light reflex pathway and lesions
Capsulated bacteria (mnemonic for NEET PG, USMLE Step - 1 Pre)
Переглядів 1,5 тис.4 роки тому
Capsulated bacteria (mnemonic for NEET PG, USMLE Step - 1 Pre)
Visual Pathway and Lesions (Part-2/2) in Hindi // Visual field defects/ Anatomy Simplified
Переглядів 7 тис.4 роки тому
Visual Pathway and Lesions (Part-2/2) in Hindi // Visual field defects/ Anatomy Simplified
Visual Pathway and Lesions (Part-1/2) in Hindi // Visual field defects/ Anatomy/ Simplified
Переглядів 12 тис.4 роки тому
Visual Pathway and Lesions (Part-1/2) in Hindi // Visual field defects/ Anatomy/ Simplified
External Carotid Artery Branches (mnemonic for NEET PG, USMLE Step - 1 Pre)
Переглядів 9374 роки тому
External Carotid Artery Branches (mnemonic for NEET PG, USMLE Step - 1 Pre)
Diaphragmatic openings and its contents (mnemonic for NEET PG, USMLE Step -1 Pre)
Переглядів 2,7 тис.4 роки тому
Diaphragmatic openings and its contents (mnemonic for NEET PG, USMLE Step -1 Pre)
Cerebrum (Part-3/6) in Hindi - Gyri & Sulci on Medial and Inferior surface of cerebral hemisphere
Переглядів 1,6 тис.4 роки тому
Cerebrum (Part-3/6) in Hindi - Gyri & Sulci on Medial and Inferior surface of cerebral hemisphere
Cerebrum (Part-2/6) in Hindi - Gyri & Sulci on Superolateral surface of cerebral hemisphere, Insula
Переглядів 2,5 тис.4 роки тому
Cerebrum (Part-2/6) in Hindi - Gyri & Sulci on Superolateral surface of cerebral hemisphere, Insula
Dear good lecture, But you missed 2 things 1=you dont mentioned here how to define Dominant system 2=Diagonal branches of LAD may be 1-3.
Thanks sir❤❤❤
Thanks very much Sir for this informative video.
Enlightened🔥tqu
Nicely done 🎉
Excellent 👌👍🏼
Thank you so much sir. in Simply words through pass the amazing information. thank you once again. 🎉❤
Amazing
absolutely amazing - thank you!!
absolutely amazing - thank you!!
Sir how long is the protective value of normal conventional angiography
I have been watching all your videos, they are the best. I mean like the best of the best🙌🥶
Wonder full sir for revision ❤❤❤ lots of heart for you ❤❤❤
Well done Doc! You did an excellent job.
Explained very nicely to know the lay man about heart functioning.
Thankyou!!❤❤
Best sir makes such type more easily understandable neurology all disease Please please please
Best
🙏
Always a pleasure to learn from you sir , since my first proff …. 6 years ago :)
Sir please upload more videos of upper limb
It is better to show us in the picture, because your pronunciation is so strange and English is not my native language , so I can hardly understand 😮
Very good and concise and understandable...thank you sir 😊
Thank you
Loved this video. I appreciate that you did NOT overcomplicate things.
Very well explained
Why nerve to subclavius is not involved in ERBs palsy
Best video for ever❤
The best explanation , profesor , thank you so much please keep going on and explain all cranial nerve like this . 🎯🎖️
Excellent vidoe ....pls can u try and set some questions so we can test ourselves
Erbs point is C7 c8 T1 Is right answar? Plz sir
Great video, thank you!
Amazing lecture 👍 jazak Allah u khairan ❤
Best video for learning brachial plexus and its branches
Can we use this diagrams for exams,because it is not in text but very informative
Yes
First time I understood this topic very well
Thnkuu❤
best video on brachial plexus and ive watched plenty 👍🏼👍🏼👍🏼, thanks alot sir ♥
Thank you so much …6 min made me understand the whole topic 😭❤️🫶🏻👏🏻
Super❤❤❤❤❤
Excellent explanation
Very informative and thorough video on this topic, great work
Badhia ! 🎉
Nicely explained 👏🏻
Very good explanation thankyou sir
Amazinggg ❤️
Planet Ayurveda's Heart care pack helps to keep heart diseases away.
6:40 2 main branch 1) circumflex a 8:52 First runs along w the anterior ant.left part of atr.ven. groove. THEN winds back to the post as post.atr.ven.groove to meet crux & anastomosis w the right.coro.art 9:20 circmfl er brach LEFT MARGINAL ART 9.30 circmflx also branch to SOME ANT.LEFT.ARRIAL-VENTRICULAR SMALL ART 2) ant interventricular a/ LEFT ANT. DESCENDING ART/LAD ART... Then goes down to the Post. Int.ven groove and anastomosis w Post.int.ven art 7:36 numeorus Ant. ventricular small branches to SUPPLE left ventricle surface 7:55 DIAGONAL ART comes out of ant.int.v.art (below the circmflx)
BRANCHES: 3:18 a) right Conus artery SUPPLIES the anterior part of the conus arteriosus/infundibulum. (Sometimes it appears as a main 3rd branch of R.Coro.A ,not as brach.) B) 3:55 R8 anterior Atrioventricular groove/right coronary sulcus er artery tar SOTO BRANCHES ber hoy = Atrial Branches SUPPLIES the mayocardium of r8 atrium C) SA NODAL ARTRY: in 60% case SA node is supplied by ONE OF THE anterior atrial brnaches of teh r8 cor.artery D) 4:30 2-3 anterior VENTRICULAR BRANCHES supplies ant surface of r8 ventriclcle E) 4:47 one of the ANT.VENT branch runs down to the apex of the heart along w the inferior border(largest r.branch) = Right Marginal Artry F) Post vent branches 5:05 in the post part of the right atrio-ventclr groove .SUPPLIES diaphragmatic surface G) 5:30 near the crux, POST. INTERVENTRICULAR Art brancch (90% case= right dominance,valo, branch of r.coro.art to the post.int.ven. groove)
00:25 tehy anastomosis w each other (not end artery) but actually functions as end artery 2:33 1st run forwards between pul trunk and righr auricle 2:47 then it goes down/descents almost vertically at=Anterior atrial-ventricular groove UPTO THE JUNCTION of right border & inferioyborder 3:00 then it runs posteriorly at the right post RIGHT PART of atrioventricular groove & reaches the crux of heart= anastomosis w CIRCUMPLEX branch of the left coronary artery BRANCHES: 3:18 a) right Conus artery SUPPLIES the anterior part of the conus arteriosus/infundibulum. (Sometimes it appears as a main 3rd branch of R.Coro.A ,not as brach.) B) 3:55 R8 anterior Atrioventricular groove/right coronary sulcus er artery tar SOTO BRANCHES ber hoy = Atrial Branches SUPPLIES the mayocardium of r8 atrium